Honda VFR800F 2014 Service Manual page 105

PGM.FI SYSTEM
DTC 23
(Oz
SENSOR HEATER)
From engine
stoP
-
V
I
Bt/o
I
.l
relay
Probable cause
.
Op"n circuit
in
the Black/orange
wire between the
engine stoP relaY
and Oz
sensor
.
Op"en
or short circuit in the White wire between the
Oz
sensor and ECM
.
FaultY
02 sensor
.
Faulty ECM
DTC 23-1
(Oz SENSOR
HEATER)
NOTE:
.
Before starting
the inspection,
check
for
loose
or
poor contact
o-n
the
O,
sensor
4P
(Black) and ECM
33P (Gray) connectors,
and
recheck
the DTC'
1.
Recheck DTG
Erase
the DTC (Page
4-7).
Start
the engine and check
the
Oz
sensor heater
with
the
MCS.
ls
the DTC
23'1
indicated?
YES
- GOTO
STEP
2.
NO -
lntermittent failure
2.
Oz
Sensor
Heater Resistance
lnspection
Turn
the
ignition switch OFF.
Disconneit
the
Oz sensor
4P
(Black) connector
(page 2-16).
ill"f"rr"
the
resistance between
the
sensor side
Oz
sensor 4P (Black) connector
[1]
terminals'
GONNECTION: White -
White
STANDARD: 10
-20
Q
(20'C/68"F)
Is the resisfa
nce
within
standard
value?
YES -
GOTO
STEP 3.
NO -
FaultY Oz
sensor
ECM
4-35